Vulnerability-Lookup

FKIE_CVE-2026-5946

Vulnerability from fkie_nvd - Published: 2026-05-20 13:16 - Updated: 2026-09-17 12:18

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

References

URL	Tags
security-officer@isc.org	https://downloads.isc.org/isc/bind9/9.18.49	Patch
security-officer@isc.org	https://downloads.isc.org/isc/bind9/9.20.23	Patch
security-officer@isc.org	https://downloads.isc.org/isc/bind9/9.21.22	Patch
security-officer@isc.org	https://kb.isc.org/docs/cve-2026-5946	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:20334
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:23360
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:24338
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:24339
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:24367
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:24368
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:55441
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:57189
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:60383
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:62549
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:65851
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-5946
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2479771
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5946.json

Impacted products

Vendor	Product	Version
isc	bind	*
isc	bind	*
isc	bind	*
isc	bind	*

JSON

To clipboard

{
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          "product": "BIND 9",
          "vendor": "ISC",
          "versions": [
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              "status": "affected",
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            "cpe:/o:redhat:enterprise_linux:10.2"
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          "packageName": "bind",
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          "vendor": "Red Hat",
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          "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
          "vendor": "Red Hat",
          "versions": [
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          "product": "Red Hat Enterprise Linux 8",
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          "packageName": "bind",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
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          "packageName": "bind9.18",
          "product": "Red Hat Enterprise Linux 9",
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          "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
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              "status": "unaffected",
              "version": "32:9.16.23-18.el9_4.12",
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          "defaultStatus": "affected",
          "packageName": "bind",
          "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
          "vendor": "Red Hat",
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              "status": "unaffected",
              "version": "32:9.16.23-31.el9_6.4",
              "versionType": "rpm"
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          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4.16::el9"
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          "defaultStatus": "affected",
          "packageName": "rhcos",
          "product": "Red Hat OpenShift Container Platform 4.16",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "416.94.202609011112-0",
              "versionType": "rpm"
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          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:hummingbird:1"
          ],
          "defaultStatus": "affected",
          "packageName": "bind-main",
          "product": "Red Hat Hardened Images",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "9.18.49-1.hum1",
              "versionType": "rpm"
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        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "affected",
          "packageName": "bind",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
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        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "unaffected",
          "packageName": "dhcp",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-8",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "9EC5B9B1-25F2-48CA-9E8A-59D8E81D408A",
              "versionEndIncluding": "9.16.50",
              "versionStartIncluding": "9.11.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "49533F8C-D7B5-450A-8808-7E1C76F4FAE4",
              "versionEndExcluding": "9.18.49",
              "versionStartIncluding": "9.18.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "D92461F1-BA01-479E-B740-38855CC216E6",
              "versionEndExcluding": "9.20.23",
              "versionStartIncluding": "9.20.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "B254E8E7-3F57-4552-ACBF-623FA481B697",
              "versionEndExcluding": "9.21.22",
              "versionStartIncluding": "9.21.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) \u2014 for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths \u2014 recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data \u2014 can cause assertion failures in `named`.\nThis issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1."
    },
    {
      "lang": "es",
      "value": "Se han identificado m\u00faltiples fallos en \u0027named\u0027 relacionados con el manejo de mensajes DNS cuya CLASE no es Internet (\u0027IN\u0027) - por ejemplo, \u0027CHAOS\u0027 o \u0027HESIOD\u0027, o mensajes DNS que especifican metaclases (\u0027ANY\u0027 o \u0027NONE\u0027) en la secci\u00f3n de pregunta. Solicitudes especialmente dise\u00f1adas que alcanzan las rutas de c\u00f3digo afectadas - recursi\u00f3n, actualizaciones din\u00e1micas (\u0027UPDATE\u0027), notificaciones de cambio de zona (\u0027NOTIFY\u0027), o procesamiento de tipos de registro espec\u00edficos de \u0027IN\u0027 en datos que no son \u0027IN\u0027 - pueden causar fallos de aserci\u00f3n en \u0027named\u0027.\nEste problema afecta a las versiones de BIND 9 9.11.0 hasta 9.16.50, 9.18.0 hasta 9.18.48, 9.20.0 hasta 9.20.22, 9.21.0 hasta 9.21.21, 9.11.3-S1 hasta 9.16.50-S1, 9.18.11-S1 hasta 9.18.48-S1, y 9.20.9-S1 hasta 9.20.22-S1."
    }
  ],
  "id": "CVE-2026-5946",
  "lastModified": "2026-09-17T12:18:24.927",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-officer@isc.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5946",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-20T13:40:04.619504Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-20T13:16:40.157",
  "references": [
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch"
      ],
      "url": "https://downloads.isc.org/isc/bind9/9.18.49"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch"
      ],
      "url": "https://downloads.isc.org/isc/bind9/9.20.23"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch"
      ],
      "url": "https://downloads.isc.org/isc/bind9/9.21.22"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.isc.org/docs/cve-2026-5946"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:20334"
    },
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      "url": "https://access.redhat.com/errata/RHSA-2026:23360"
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    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:24339"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:24367"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:24368"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:55441"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:57189"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:60383"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:62549"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:65851"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5946"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479771"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5946.json"
    }
  ],
  "sourceIdentifier": "security-officer@isc.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-617"
        },
        {
          "lang": "en",
          "value": "CWE-754"
        },
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ],
      "source": "security-officer@isc.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1287"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

CVE-2026-5946 (GCVE-0-2026-5946)

Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-09-17 12:04

Title

Invalid handling of CLASS != IN

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-20 13:40 UTC

CWE

CWE-20 - Improper Input Validation
CWE-125 - Out-of-bounds Read
CWE-617 - Reachable Assertion
CWE-754 - Improper Check for Unusual or Exceptional Conditions
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
CWE-1287 - Improper Validation of Specified Type of Input

Assigner

isc mitre root Scorecard

References

18 references

URL	Tags
https://kb.isc.org/docs/cve-2026-5946	vendor-advisory
https://downloads.isc.org/isc/bind9/9.18.49	patch
https://downloads.isc.org/isc/bind9/9.20.23	patch
https://downloads.isc.org/isc/bind9/9.21.22	patch
https://access.redhat.com/security/cve/CVE-2026-5946	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479771	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:60383	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62549	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65851	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24338	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24339	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23360	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57189	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55441	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24367	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24368	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20334	vendor-advisoryx_refsource_REDHAT

Impacted products

14 products

Vendor	Product	Version
ISC	BIND 9	Affected: 9.11.0 , ≤ 9.16.50 (custom) Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind::::::::
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 32:9.18.33-15.el10_2.2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 32:9.11.4-26.P2.el7_9.21 , < * (rpm) cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 32:9.16.23-0.22.el8_10.6 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 32:9.11.36-16.el8_10.8 , < * (rpm) cpe:/a:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 32:9.16.23-40.el9_8.2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 32:9.18.29-14.el9_8.2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 32:9.16.23-18.el9_4.12 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 32:9.16.23-31.el9_6.4 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat OpenShift Container Platform 4.16	Unaffected: 416.94.202609011112-0 , < * (rpm) cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat Hardened Images	Unaffected: 9.18.49-1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2026-05-20 00:00

Credits

ISC would like to thank Mcsky23 for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-617",
              "description": "CWE-617 Reachable Assertion",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-754",
              "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-843",
              "description": "CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T13:10:03.479Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "name": "CVE-2026-5946",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://kb.isc.org/docs/cve-2026-5946"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://downloads.isc.org/isc/bind9/9.18.49"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://downloads.isc.org/isc/bind9/9.20.23"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://downloads.isc.org/isc/bind9/9.21.22"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.49, 9.20.23, 9.21.22, 9.18.49-S1, or 9.20.23-S1."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Invalid handling of CLASS != IN",
      "workarounds": [
        {
          "lang": "en",
          "value": "Don\u0027t configure zones other than Internet (`IN`) class. Furthermore, do not expose the server that allows DNS Dynamic Update to the general Internet."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2026-5946",
    "datePublished": "2026-05-20T13:10:03.479Z",
    "dateReserved": "2026-04-09T06:40:07.319Z",
    "dateUpdated": "2026-09-17T12:04:38.551Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2026-5946

CVE-2026-5946 (GCVE-0-2026-5946)

Tags

Sightings

Nomenclature

Related by attack behaviour